Spring 3.1 MVC应用上的HTTP状态404 [英] HTTP Status 404 on Spring 3.1 MVC app
问题描述
我试图创建并运行一个简单的Spring 3.1 mvc Web应用程序，其中我定义了一个控制器，该控制器使用以下类在响应正文中简单地返回"hello":
i am trying to create and run a simple Spring 3.1 mvc web application where i have defined a controller that simply returns "hello" in the response body using the class below:
package com.jr.freedom.controllers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class Hello {
@RequestMapping(value = "/hello", method = RequestMethod.GET)
@ResponseBody
public String helloWorldInJson() {
return "hello";
}
}
我尝试过此URL，但是我一直返回404错误?
i have tried this URL but i keeps returning a 404 error?
http://localhost:8080/FreedomSpring/hello
这是我的servlett:
Here is my servlett:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<import resource="mvc-config.xml" />
<bean
class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
<!-- Resolves views selected for rendering by @Controllers to .jsp resources
in the /WEB-INF/views directory -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<context:component-scan base-package="com.jr.freedom.controllers"></context:component-scan>
</beans>
这是web.xml文件
here is the web.xml file
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>FreedomSpring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>FreedomSpring</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
</param-value>
</context-param>
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/log4j.xml</param-value>
</context-param>
<welcome-file-list>
<welcome-file>
index.jsp
</welcome-file>
</welcome-file-list>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
</web-app>
最后是我的mvc-config.xml
And finally my mvc-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
<mvc:annotation-driven />
<!-- the application context definition for the springapp DispatcherServlet -->
<mvc:view-controller path="/" view-name="index.jsp" />
</beans>
顺便说一句，我正在Windows 7机器上使用tomcat 7.从tomcat的日志文件中找不到错误:
I am using tomcat 7 on a windows 7 machine by the way. No errors are found from my logfile from tomcat:
13-Feb-2012 12:37:36 org.apache.catalina.core.ApplicationContext log
INFO: Destroying Spring FrameworkServlet 'FreedomSpring'
13-Feb-2012 12:37:36 org.apache.catalina.core.ApplicationContext log
INFO: Shutting down log4j
13-Feb-2012 12:37:36 org.apache.catalina.core.ApplicationContext log
INFO: Closing Spring root WebApplicationContext
13-Feb-2012 12:37:37 org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
13-Feb-2012 12:37:37 org.apache.catalina.core.ApplicationContext log
INFO: Set web app root system property: 'webapp.root' = [C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\FreedomSpring\]
13-Feb-2012 12:37:37 org.apache.catalina.core.ApplicationContext log
INFO: Initializing log4j from [C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\FreedomSpring\WEB-INF\log4j.xml]
13-Feb-2012 12:37:37 org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'FreedomSpring'
0:0:0:0:0:0:0:1 - - [13/Feb/2012:12:37:45 +0000] "GET /FreedomSpring HTTP/1.1" 302 -
0:0:0:0:0:0:0:1 - - [13/Feb/2012:12:37:45 +0000] "GET /FreedomSpring/ HTTP/1.1" 404 997
0:0:0:0:0:0:0:1 - - [13/Feb/2012:12:37:51 +0000] "GET /FreedomSpring/hello HTTP/1.1" 404 1012
有什么想法吗?
推荐答案
您的DispatcherServlet被映射到*.htm:
<servlet-mapping>
<servlet-name>FreedomSpring</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
但是您正在通过不匹配的URL访问控制器: http://localhost:8080/FreedomSpring/hello .您有三种选择:
But you are accessing the controller through non-matching URL: http://localhost:8080/FreedomSpring/hello. You have three choices:
-
将调度程序servlet更改为:
Change you dispatcher servlet to:
<servlet-mapping>
<servlet-name>FreedomSpring</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
但是在这种情况下，所有请求都将通过Spring MVC处理，包括图像和其他静态资源
but in this case all requests will be handled through the Spring MVC, including images and other static resources
在控制器中也使用扩展名:
Use extension in controllers as well:
<url-pattern>/*.htm</url-pattern>
并将Hello控制器映射到.htm，以便您使用: http://localhost:8080/FreedomSpring/hello.htm .
and map Hello controller to .htm so that you use: http://localhost:8080/FreedomSpring/hello.htm.
将控制器映射到另一个子目录:
Map controllers to a different subdirectory:
<url-pattern>/mvc/*</url-pattern>
要访问它们，您将必须使用: http://localhost:8080/FreedomSpring/mvc/hello 而不对控制器本身进行任何更改.
to access them you will have to use: http://localhost:8080/FreedomSpring/mvc/hello without making any changes to the controller itself.
这篇关于Spring 3.1 MVC应用上的HTTP状态404的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
